1978 Ski-Doo Shop Manual, Page 238Get this manual
SECTION 04 SUB-SECTION 05, (CARBURETOR)
REMOVAL
Remove air silencer box, fuel inlet line and primer lineUnscrew carburetor cover then pullout throttle slide ass'v from carburetor_
The size of the throttle slide cut-away affects the fuel
mixture between to 34 throttle openingA certain amount of richness is needed for that particular range because this is where the transition from the low speed to the high speed circuit takes place
ATTENTION: Exercise care when handling throttle slideScratches incurred may cause throttle slide to stick open in operation
Untighten rubber flange clamp then remove carburetor from engine
CLEANINGINSPECTION
The entire carburetor should be cleaned with general solvent and dried with compressed air before disassemblyCarburetor body and jets should be cleaned in carburetor cleaner following manufacturer's instructions WARNING: Solvent with low flash point such as gasoline, naphtha, benzol, etc should not be used as they are flammable and explosive
Low cut-away
rich mixture
High cut-away